Search results
Results from the WOW.Com Content Network
Upper groundwater aquifer and most of Artesian aquifers were damaged in first place due to massive surface contamination with radioactive isotopes Strontium-90 and Cesium-137. At the same time, considerable levels of radioactive content were fixed on the periphery of exclusion zone, including part of potable water delivery system.
A sample of groundwater from another well situated about 100 meters south of the first well showed that the radioactivity had risen by 18 times over the course of 4 days, with 1.7 kBq/L of strontium and other radioactive substances. [49]
Water was introduced to prevent the meltdowns from progressing further. When cooling water, groundwater, and rain came into contact with the melted fuel debris, they became contaminated with radioactive nuclides, such as iodine-131, caesium-134, Caesium-137, and strontium-90. [3] [4]
The primary releases of radioactive nuclides have been iodine and caesium; [65] [66] strontium [67] and plutonium [68] [69] have also been found. These elements have been released into the air via steam; [70] and into the water leaking into groundwater [71] or the ocean. [72]
The contaminated groundwater had a footprint larger than Boise, Idaho. Hanford set up pump-and-treat facilities to treat the water and then re-inject it back into the ground, Miller said.
It has great efficiency in the treatment of cesium-137 and strontium-90, particularly by algae and aquatic plants, such as Cladophora and Elodea genera, respectively. It is the most efficient strategy for bioremediation technologies in wetlands , [ 34 ] but must have a continuous and rigorous control of pH to make it an optimal process.
Plant waste, collected in a pond, was found to contain radioactive waste, including strontium-90, caesium-137; tritium, and transuranics. [citation needed] In the mid 1990s, Department of Energy officials installed a cryogenic stabilization system at the waste pond, freezing the soil and groundwater, forming a barrier to groundwater leaching ...
The study claims a highly selective biosorption capacity for strontium of S. spinosus, suggesting that it may be appropriate for use of nuclear wastewater. [86] A study of the pond alga Closterium moniliferum using non-radioactive strontium found that varying the ratio of barium to strontium in water improved strontium selectivity. [85]